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`(No-Moiel.) v H. PENNIE. IITSULAIOR POR SUPPORTING AND HOLDINGXBLEC'I'RIG WIRES.

No. 359,812. y Patnted Mar. 22,1887.

FW R9@ UNITED STATES PATENT OFFICE.

HENRY PENNIE, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF TO LOUIS O. SOHLEIP, OF SAME PLACE.

INSULATOR FR SUPPORTING AND HOLDING ELECTRIC WIRES.

SPECIFICATION forming part of Letters Patent No. 359,812, dated March 22, 1837. Application filed Alpril 14. 1986. Serial No.198,7`5. (No model.)

To all whom it may concern:

Be it known that I, HENRY PENNIE, a citizen of the United States, residing at the city of Brooklyn, in the countyof Kings and State of New York, have invented certain new and useful Improvements in Insulators for Supporting and Holding Electric VireS, of which the following is a speciiication.

My invention relates, chiefly, to insulators for holding and supporting electric wires; and its object is to provide an insulator of simple construction, which will not only support an electric wire, but also avoid the necessity' of securing the electric wire to the insulator by tying with additional pieces of wire,and thereby make asaving of time, labor, and material.

By the use of myinventionadesirable means of introducing and holding electric wires in buildings is also provided,\vl1ereby the danger of iire and grounding of the wires is lessened and obviated.

In the accompanying drawings similar letters of reference designate corresponding parts in all the'iigures. l

Figure l represents a top View of one form of my improved insulator. Fig. 2 represents a sectional view at x x of Fig. l. Fig. 3 rep-v resents a longitudinal section in detail.

A designates the core or body of the insulator, made of porcelain, glass, or other snitable non-conducting material, having a longitudinal slot, B, of peculiar form, extending through the same. The walls or sides a a of this slot extend parallel downward for a short distance and then diverge outward at an angle, as shown by b b. The bottom e e of the slot has a semicircular depression or cavity, C, extending along its length, in which an electric wire, D, is placed by inserting the same between the space formed by the walls a a, which is of suihcient width to admit the wire. This cavity or depression C is preferably of such a size and depth as to cover and protect about twothirds of the circumference of the wire D.

A tapering Wedge, E, made of hard rubber or other suitable non-conducting composition or material, corresponding in shape to the spacesin the lower part of the'longitudinal 5o slot B, formed by the sides b b and the bottom ee, is inserted at one end ofthe opening in the lower end of the slot formed by said sides b b, and is forced or drawn tightly therein, and is secured thereto by means of a cap or pin, c, or other suitable devices.

It will be seen that the wedge E bites upon the wire D at its exposed portion and rmly holds it in the cavity C of the core A, and by reason of the peculiar construction of the lower part of the slot B a key or cork-wedge hold is obtained,which securely locks the wire in place and prevents its moving or being pulled out at either end.

As will be seen in Figs. 2 and 3, the core or body A is provided with a hole, V, extending at right angles to the opening in the slot B, and part of which hole is made large enough for the head of a screw, l?, to pass in and be secured some distance below the wire D.

The insulator may be provided with 'a series of slots, or a series of depressions in the cavity of the slot, of the construction set forth for holding a number 0f wires, and instead ot' having a single screw, P, as in Figs. 2 and 3,

a number may be used. Two wedges may be used instead of a single one, E, and be inserted at each opening of the slot B, and they will securely hold the wire D without pins c.

The shape of the body or core A of the insulator may also be made of different forms, as desired.

Where the portion of the insulator to be an nexed to a wall is flat, as Y in Figs. 2 and 3, a coating or padding, o, of rubber or textile fabric or material, may be secured to the at surface Y by adhesive material, which will prevent the insulator chipping or breaking when tightly screwed to a wall or pole, and at the same time provide an additional non-conducting material.

By the use of my invention it will be seen that electric wires introduced in buildings may be mounted and held in position without additional tying or coming in contactwith any part of the building itself, and danger from ignition from the wires, as also the grounding of the electricity by the wires touching conducting material, be entirely avoided.

l am aware that lightning-rod insulators have been made with a central opening and Open back, and closed. by means of a wedge- :mllel and divergent sides a (t b b,\vith a depresshape or taper filling-piece having` n flanged sion, C, in the bottom e e ofthe cavity formed head fitting in a recess in the top of the core to by said sides Z) Z), and provided with a hole or prevent its dropping out, the opening and Vlill- 5 ing-piece being dovetailed to prevent the latter from being removed laterally from the back of the insulator, and sueh improvements Ido not here claim.

What I claim its my invention, and desire to ro secure by Letters Patent, is-

The insulator A, having` n slot, B, with parholes, V, substantially as set fol-th. I5

In testimony whereof I have hereunto subscribed my name this 13th day of April, 1886.

HENRY PENN IE. 'Vitnesses:

Ron'l. H. MARSHALL, PATRICK DUNNE. 

